(1/2) In Doukyuusei If, the Sega Saturn port of elf's 1992 dating sim 同級生, there's a file called CLASS.DAT that looks like a normal game file. It's actually a disguised .LZH archive. Open it with 7-Zip to find 5 .BMP files. The first four are bonus art not found in the game, attached here.

On the ToHeart2 Desktop Accessories disc, there's widgets that show a character from the game and a clock - like an anime Bonzai Buddy with less features. I found an easter egg: click it exactly 5888 and 8888 times (!!!) to get popup messages from “SADTICE” and “KEN,” presumably the programmers.

I had NO idea that the full source code for ToHeart2 was publicly available! Leaf was required to publish it due to using XViD, which was licensed under GPL. So for a while, Japanese players could pay 600 yen to have Leaf mail them a CD-R with the source burned on it... github.com/autch/aquapl...

ToHeart2 XRATED版のミニゲーム「ドキドキぱにっくライブラリ」のデータに、使われていなさそうな画像が2枚ありました。 Two (presumably) unused images sitting in the data files of ToHeart2 XRATED's minigame "ドキドキぱにっくライブラリ". #TH2 #ToHeart2 #AQUAPLUS

PC-88のADVゲームの中には、自己言及的なユーモアがあって大好きw Some PC-88 adventure games have this self-aware humor in the writing that I really enjoy, lol. #PC88 #PC98 #カクテルソフト

The 2008 Windows visual novel BIFRONTE～公界島奇譚～ contains a hilariously sloppy anti-piracy check: it looks for Daemon Tools installed in the default installation folder, and then blindly runs "daemon.exe -unmount 0", automatically unmounting ALL virtual drives.

Please play "The Dog Island" I promise you it's a rollercoaster.

ffmpreg

Some CG used exclusively in the PS1 version of "Doukyuusei 2". [同級生2]

Some interesting books on Saeki's shelf in Bible Black -La noche de walpurgis- (visual novel), including the Voynich manuscript

If you are a visual novel developer affected by the recent itch.io changes, and your VN was free-of-charge, I can mirror + provide a direct download link to your VN on my webserver, completely free of charge. I may recompress your files into a new archive format (rar, zip) to reduce size.

A Japanese developer of a visual novel on the closed-source Ikura GDL engine left the entirety of the descriptions for what the engine's opcodes do in the .exe file's strings. Can't complain about that.

Harmless anime girl CG, or cryptid??

New hidden developer rant found in Alice Soft's PC-98 game DALK (1992). A developer fires a few shots at a coworker for taking credit for his work, and complains about their game engine. アリスソフトのPC-98ゲーム『DALK』（1992年）で、新たな開発者の隠れた愚痴が発見された。同僚に自分の功績を横取りされたことに不満をぶつけ、エンジンへの不満も述べている。 #PC98 #PC-98

Discovered a NEW hidden message in the 1989 adventure game Angelus ~Akuma no Fukuin~ by ENIX (now Square Enix) - but this message is only in the PC-98 version, buried on the disk. Original Japanese and AI-translated English provided in images. Shots fired

"$80 Mario Kart" "$20 The Shell Part I: Inferno"

Merry Christmas. Happy to say that my easter egg discovery in Xak: The Art of Visual Stage got in the latest OddHeader video. www.youtube.com/watch?v=zGJv...

Caution screen from Gainax's Cybernetic High School (電脳学園) (1989, PC-98). It displays every time at boot, telling you what NOT to do with your floppy disk. #PC88 #PC98

30+ years later, an undiscovered easter egg in Xak: The Art of Visual Stage is found! On PC88/98/MSX2 versions, re-enter the cave after telling Rachel about her father. Talk to her 60-70+ times - she'll max your level to 25 and talk about the designer's Honda VFR400. (translation in replies) #ザーク

Found a new easter egg: Insert disk 2 of the PC-88 version of Xak: The Art of Visual Stage into a PC-98, and you'll get this cheeky message: 「あれーっ。なんで９８に入れるんだよー。 このディスクは８８用だよー。何考えてるんだい。」 "Huh?! Why are you trying to load this on a 98? This disk is for the 88! What're you even thinking?" #PC88

Discovered a new easter egg in Kimagure Orange Road ~Natsu no Mirage~ (きまぐれオレンジロード ～夏のミラージュ～) by Micro Cabin! Repeatedly use the phone mid-game, and a 'Mysterious Voice' eventually answers, ranting about unrelated TV dramas, actors, and movies. 📞 Message(s) in replies as they're way too long. #PC98

Oh hey, the password system of the arcade version of Tatsunoko vs. Capcom's been figured out- those four 'Wii-exclusive' characters (Saki, Viewtiful Joe, Ippatsuman and Hakushon Daimaou) were hiding in here all along! www.youtube.com/watch?v=d9mp...

Ah, the Save Rabbit from Seilane (セイレーン) also makes an appearance in other Micro Cabin adventure games! #PC88 #PC98

Digging into more text dialogue from another 80s Micro Cabin JP adventure game - found this random out-of-place string: "I cleared R-Type 1 on my PC Engine! The password is AEB-2461-MA." Huh. I wonder what that password does? 🤔

Discovered some brand new hidden developer messages in Seilane (セイレーン), another 80s Micro Cabin adventure. You play as a rabbit. Once you meet a human boy, if you spam 'Talk' to him in specific spots, you'll get random dev musings. Tom Cruise is mentioned! (1/2) #PC88 #PC8801 #PC98 #裏技

"Should we just put the 'Save' and 'Load' options somewhere in the menu?" "No, let's actually have the player select 'Call', and then they have the option to call the Save Rabbit to save their game. How about that?" 「いや、それよりプレイヤーにまず『呼ぶ』を選ばせて、その後でセーブラビットを呼んでゲームをセーブするっていう仕組みにしよう。どう？」 #PC88 #PC98

Final set of new hidden messages in What's Michael (PC-88), at the end of the game. Perhaps the most interesting of all: It's an apology from the game's designer (?), and announces their departure from game design work after the game's completion. English translation in replies (it's long) #PC88

Third and final movie review hidden in What's Michael on PC-88. Roger Ebert would be proud! This time around, only a couple obscure Japanese movies are mentioned. Translated message in replies. 「ホワッツマイケル」に隠された3つ目で最後の映画レビュー。 #PC88 #PC8801 #PC98 #裏技

Yet another movie review blogpost hidden in What's Michael (PC-88)...if you spam the same command for nearly 2 minutes, at the start of Chapter 3. This time we've got Scrooged, Coming to America, and Beverly Hills Cop. Translated message in replies. 再び、PC-88の「ホワッツマイケル」で新たに発見された隠しメッセージ。それはまた映画レビュー

Third newly discovered hidden developer message in What's Michael (ホワッツマイケル) for the PC-88. This time it's a bit more normal. Message in replies, too long to post. この隠しメッセージ、今回は少し普通っぽい。メッセージはリプライに記載、長すぎてここには書けません #PC88 #PC8801 #PC98 #裏技

Watched the first What's Michael (ホワッツマイケル) OVA out of curiosity... it's really something. www.youtube.com/watch?v=QDS9...

Another newly discovered hidden message in the PC-88 adventure game What's Michael (ホワッツマイケル). This time, it's actually a heartfelt apology from one of the developers. Full message in replies, too long to fit here. PC-88のADVゲーム「ホワッツマイケル」で新たに発見された隠しメッセージ。 今回は、開発者の一人からの心のこもったお詫びのメッセージです。

Newly discovered hidden message (an entire movie review, lol) randomly in the Japanese PC-88 adventure game ホワッツマイケル. Translation & full message in replies. There's lots more, stay tuned. 新たに発見された隠しメッセージ（まさかの映画レビュー全文w）が日本のPC-88ADVゲーム『ホワッツマイケル』にランダムに登場。翻訳と全文はリプライにて。近日中にさらに公開予定。 #PC88 #PC8801 #PC98

Undiscovered easter egg (until now) in Squaresoft's 1986 adventure game Alpha, where if you enter 「ｻｹﾌ」 (shout), it says ｢ﾀﾅｶ ﾉ ﾊﾞｶ-!｣ or "Tanaka, you idiot!". This is a reference to the game's producer, Hiromichi Tanaka (田中 弘道).

New Discovery: The PC-88 game Kudokikata Oshiemasu (口説き方教えます) is programmed to format the disk if it detects a pirated copy. I wonder if the versions for other platforms do the same. 新発見：「口説き方教えます」は、不正コピーを検出するとディスクをフォーマットするようにプログラムされています。 #PC88 #PC8801 #裏技

The PC-88 adventure game Mahoutsukai no Deshi (魔法使いの妹子) contains a hidden command 「タイダン」that will display special messages from the developers. 魔法使いの妹子には、「タイダン」という隠しコマンドがあり、開発者からの特別なメッセージが表示されるようになっています。 #PC88 #PC8801 #裏技

Some unused CGs and variants in the files for the visual novel Slow Damage. These are images that exist in the game's files, but aren't referenced by any scripts.

A bizarre PC-88 adventure game I completedly overlooked is Boukenshatachi Kenja no Yuigon (冒険者達　賢者の遺言). Exploration-focused early ADV game with some puzzles. One JP reviewer writes "This game is packed with plenty of incomprehensible secrets. How many can you find?" #PC88 #PC-88 #vn #裏技

Do not copy. If you have even a shred of conscience, you won’t commit the “sin” of copying. If you do copy, “misfortune” will surely arrive on your disk! You have committed a grave sin... A copy protection message in the disk for Star Arthur Densetsu II on the NEC PC-88. #PC88

Looking through the graphics files of Custom Mate 2 (カスタムメイト２) by Cocktail Soft for PC-98... I haven't actually played the game to verify, but something in my gut tells me this MS Paint-tier drawing I found is NOT actually used in-game, lol #PC98 #カクテルソフト

Thread: Oddities I found in Kurutta Kajitsu (狂った果実) (aka "Crazed Fruit") for the PC-98. Right from the start, you can opt to visit the cafeteria instead of the lecture hall. This extra scene has unique dialogue but serves no real purpose. #PC98 #Fairytale #裏技 #攻略

Looking through the files for the Japanese Windows version of the game Crypt Killer (1995)... found video files for the endings. English VA despite being a Japanese release. These are pretty lol (Also note the Japanese voice at the very beginning, you're probably not supposed to hear that in-game)

I found an undiscovered easter egg in "Koroshi no Dress" (殺しのドレス) for the PC88/98. Repeatedly trying to flee at the final scene gives a special message and an ad for FAIRYTALE's next game "Dream Girls" (which doesn't exist?) (English translation in replies) #PC88 #PC8801

Koroshi no Dress (殺しのドレス) on the PC88/98 has this creepy, unused CG of a person in a black pointed hood holding a cross, with a red Z on their forehead. It doesn't fit with any scenes in the game, nor does it appear in normal gameplay. #PC88 #PC8801 #PC98 #PC9801 #Fairytale

ZETA 2 by Champion Soft for the PC-88 has a pretty scary easter egg if you enter the number '44' at the main menu. 「ZETA 2」には、メインメニューで「44」を入力するとかなり怖いイースターエッグがあります。#PC88 #PC8801

A while back, I found an undiscovered easter egg in The Stone of Agni (アグニの石) for PC-88 by HummingBirdSoft. No mentions online, and I only accessed it by memory editing, don't know how to activate it authentically. But it’s there! #PC88 #裏技

Two unused CGs left in the files for Ever17 (Windows version). Ever17（Windows版）のファイルに未使用のCGが2枚残されている。